builtup4/bu4/evaluation/constructs/enull.py

13 lines
273 B
Python

from bu4.evaluation.constructs.evaluable import Evaluable
from bu4.evaluation.constructs.evalue import EValue
__all__ = ('ENull',)
class ENull(EValue):
def call(self, argument: Evaluable) -> Evaluable:
return self
def __str__(self):
return f'?'